https://github.com/joto/flinch
Flinch is a powerful and flexible web link checker that will make your life as a web designer or web server admin easier. Flinch is implemented in Perl and released under the GPL (GNU General Public License). It can be used to check all the external links on your web pages periodically and produce HTML reports of its findings. If a web resource at the end of a link has not been reachable for a few days, Flinch can send you an email.
For installation instructions see the HTML documentation in the doc directory.
Flinch needs the Perl modules XML::Generator, XML::Parser::PerlSAX, HTML::LinkExtor, LWP::UserAgent, URI, Digest::MD5, and HTTP::Status from CPAN.
On Debian/Ubuntu systems you can install the following packages:
apt install libxml-generator-perl libxml-perl liburi-perl libdigest-md5-perl \
libwww-perl libhttp-message-perl
The documentation is here.
Copyright © 2001-2020 by Jochen Topf jochen@topf.org
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
Written by Jochen Topf jochen@topf.org